| 摘要 |
PROBLEM TO BE SOLVED: To provide a laser light source capable of reducing color density difference and color difference in the image. SOLUTION: A laser array light source 40 is structured in such a manner that a sub-mount 44 is joined with an adhesive 46 on a heat sink 42 and a laser array chip 48 is mounted on the sub-mount 44 via a contact electrode 50. A trench 54 is formed between each of light-emitting points 52. In addition, a trench 58 is formed on each position corresponding to the trench 54 on the sub-mount 44. The trenches 54 and 58 make the thermal interference resistance between each laser higher than the thermal resistance between the laser array chip 48 and heat sink 42, thus improving the heat dissipation performance for reduction of light volume variations between each laser. COPYRIGHT: (C)2007,JPO&INPIT
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